3f+30=-9

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Solution for 3f+30=-9 equation: 



3f+30=-9

We move all terms to the left:

3f+30-(-9)=0

We add all the numbers together, and all the variables

3f+39=0

We move all terms containing f to the left, all other terms to the right

3f=-39

f=-39/3

f=-13

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